Question

What is the value of y?

3y2 − 6 = 42

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Answer 1

Ok so,
3y^2=42+6
3y^2=48
y^2=48/3
y^2=16
y=root of 16
y = 4

Answer 2

3y²-6=42
3y²=42+6
3y²=48
y²=16
y=4